A man is walking on the grass.he starts from a,and walks straight along to the east for 3 meters,then turn left for 120°,then walks staight along for 3 meters and turn left for 120° again...How far away is he from A when he walks for 2005 meters?
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A man is walking on the grass.he starts from a,and walks straight along to the east for 3 meters,then turn left for 120°,then walks staight along for 3 meters and turn left for 120° again...How far away is he from A when he walks for 2005 meters?
A man is walking on the grass.he starts from a,and walks straight along to the east for 3 meters,then turn left for 120°,then walks staight along for 3 meters and turn left for 120° again...
How far away is he from A when he walks for 2005 meters?( )
过程我看不懂滴......
A man is walking on the grass.he starts from a,and walks straight along to the east for 3 meters,then turn left for 120°,then walks staight along for 3 meters and turn left for 120° again...How far away is he from A when he walks for 2005 meters?
1.是2米 还是解释一下吧
2.从A点出发 向东径直走了3米 左转120度 走了三米 再左转120度 走了三米 你画一个图就会发现这是一个边长为3米的等边三角形
3.那么走了2005米 除以该三角形的周长9米 等于222余七 这就是说他走了222圈后又到了原点 并且还有七米没有走 这就说明 他才从A出发走了9-7=2米
答案是(2m)。那人走的路程是边长为3m的等边三角形。他走了2005米的过程是:先沿着三角形的边走了222圈回到a点,再走两个3m,最后再走1m,此时距离a点2m。
意思你知道吧! 一个人走在grass.he起步,沿着东走3米,然后左转为120°,然后走开staight同行3米,左转为120°再…
有多远,他从一个当他走过为2005米吗?
I don't know